static mapping?

Hello,

    we're using alpha-linux-myrinet cluster which is now consists of 64
nodes. The main problem is the gm stability - sometimes not all open ports
closed after the process finished. So we decide to reload gm linux module
between apps starts (i.e. something like "rmmod gm; insmod gm" performed
between tasks). But the main problem here is the need to remap the network
after such manipulation - so now we're performing map-once process on fixed
node to remap the network. But this aproach is not good enough. Unfortunatly
the node which is used for mapping is also used as computational node, and
sometimes it crashes: sometimes we got "spinlock stuck" messages forever,
sometimes any gm related software (such as mapper & gm_board_info & any
other user tasks) hangs... So now we're looking for solution with no single
point of failure for mapping. As seems the most logical solution is the
static mapping - i.e. we need to load individual map/routing tables into
each "rebooted" lanai chip. And we did not need to load/update this maps on
other nodes. Is this possible?

    As seems gm comes with file_mapper but I'm not sure is this compiled to
"sbin/mapper" in the resulting binary tree. And as seems this mapper will
update routing maps on the entire network, not just the current node...

    Does anyone use this? Any ideas?


Best regards,
    Oleg.